为________ 而奋斗，这是时代赋予我们的崇高使命。
实现全国各族人民的共同理想
通常将软件分为系统软件和应用软件。Windows操作系统自带的计算器是______软件。
His health failing, ______ last year.
A．so the school gave Mr. Smith leave
B．the school had given Mr. Smith leave
C．so Mr. Smith went on leave from work
D．Mr. Smith went on leave from work
